A long, coiled, sterile wire intended to be percutaneously placed into the vasculature, typically via the femoral artery, to function as a guide for the introduction, positioning, and/or operation of a cardiac catheter or a pacing lead into the ventricles or vessels of the heart. It is typically made of stainless steel, with or without coating (coating facilitates movement), and is available in a variety of distal tip designs. It is used during percutaneous transluminal coronary angioplasty (PTCA) and other diagnostic and interventional procedures. It may include devices used to facilitate manipulation (e.g., torque device). This is a single-use device.